Schematic Design Of D-Latch and D-Flip Flop

1.
The above figure is the gate level implementation of:
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2. What kind of flip flop is generally preferred for constructing counters?
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3. What is meant by the problem of metastability in flip flop
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4. Mankar is doing an experiment on 8*1 Mux where the inputs are from i0 to i7. The value of s1,s0 and s2 are 1,0,1 respectively. The output of the mux is:
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5. How many D-Latches are required to implement a D-Flip Flop?

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